(19)

(11)

EP 0 840 905 A1

(12)

(43) Date of publication: 13.05.1998 Bulletin 1998/20 (21) Application number: 97903130.0 (22) Date of filing: 27.01.1997

(51) International Patent Classification (IPC):  G03B 33/ 12( . ) G03B 21/ 00( . ) H04N 9/ 31( . ) G02B 27/ 18( . ) H04N 5/ 74( . ) H04N 17/ 00( . ) (86) International application number: PCT/US1997/001338 (87) International publication number: WO 1997/027512 (31.07.1997 Gazette 1997/33)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 25.01.1996 US 19960590395 (71) Applicant: Delta America Ltd. Fremont, CA 94538 (US)	(72) Inventors: BRICE, Stephen, E. Portland, OR 97229 (US) KINGSLEY, Gary, B. Tigard, OR 97223 (US) PAYNE, David Hillsboro, OR 97124 (US) SALSMAN, Kenneth, E. Brush Prairie, WA 98606 (US) (74) Representative: Reinhard - Skuhra - Weise & Partner  Postfach 44 01 51 80750 München 80750 München (DE)